These are graphite, high silicon cast iron, lead silver alloy, platinum, and even scrap steel rails.

所用材料有石墨、高硅铸铁、铅银合金、铂、甚至废钢轨等。

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The results show that the factors arragned in important order as the follows:the quantity of iron scrap, graphite, ancillary material A, treatment time, aeration time.

实验结果表明影响因素的重要性依次为铁屑用量、石墨用量、辅料A用量、处理时间、曝气时间。

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Carmack was forced to scrap the return trip, required to collect the prize, after a graphite engine nozzle disintegrated.

FORBES: Magazine Article